Abstract
We describe the procedure developed for the electrolytic concentration of3H in water, together with systematically applied checks to guarantee the reproducibility of the process and to minimize the variability between water samples concentrated simultaneously in the different electrolytic cells. Starting from initial volume of 250 ml water, we obtained enrichment parameters normally greater than 70%, with a dispersion always less than 5%. Measuring the concentrated and the unelectrolyzed samples under the same conditions, we found that the lowest detectable activities had been improved from around 1.5 to 0.3 Bq/l. This allowed us to quantify the3H activity levels of 100% of the rainwater samples collected in Cáceres from 1994 to 1996. The resulting average value for this period was (0.79±0.38) Bq/l.
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References
R. M. Brown, Proc. Workshop on Tritium and Advanced Fuels in Fusion Reactors, CEC Publ. EUR 12540, Varenna, Italy, 1989.
S. Okada, N. Momoshima, Health Phys., 65 (1993) 595.
A. Baeza, L. M. Del Río, A. Jiménez, C. Miró, J. M. Paniagua, M. Rufo, J. Radioanal. Nucl. Chem., 207 (1996) 331.
N. Momoshima, T. Kaji, I. T. Poppy, N. Inoue, Y. Takashima J. Radioanal. Nucl. Chem., 150 (1991) 163.
M. J. Wood, R. G. C. McElroy, R. A. Surette, R. M. Brown, Health Phys., 65 (1993) 610.
P. Theodorsson, Isotopes in Hidrology, IAEA, Vienna, 1967.
J. Shimada, H. Momota, Y. Ono, Subsurface Space, Pergamon Press, Stockholm, 1980.
IAEA, Tritium in Some Typical Ecosystems, Tech. Rept. No. 207, IAEA, Vienna, 1981.
A. Baeza, L. M. Del Río, E. García, A. Jiménez, C. Miró, J. Paniagua, M. Rufo, Anal. de Física, 93 (1997) 177.
A. Baeza, E. García, M. Díaz, C. Miró, Proc. XXVI Reunión, Bienal de Física. Las Palmas de Gran Canaria, Spain, 1997.
Wallac, Quantulus: Liquid Scintillation Counter. 1220, Instrument Manual, LKB Wallac, 1987.
E. García, Puesta a punto de un espectrómetro de centelleo líquido y ultrabajo fondo para la medida de tritio en muestras de agua, Universidad de Extremadura, Spain, 1995.
M. C. Faísca, Proc. 4a Conf. Nac. de Física, Évora, Portugal, 1984.
O. Sepall, S. G. Mason, Can. J. Chem., 23 (1960) 2024.
P. Benzi, F. Nebbia, R. Righetti, P. Volpe, J. Radioanal. Nucl. Chem., 196 (1995) 15.
C. B. Taylor, Proc. Intern Symp. on Methods of Low-Level Counting and Spectrometry, IAEA, Berlin, 1981.
M. Kakiuchi, K. Tanaka, K. Kigoshi, J. Appl. Radiation Isotopes, 8 (1991) 741.
T. Florkowski, Low-Level Tritium Assay in Water Samples by Electrolytic Enrichment and Liquid-Scintillation Counting in the IAEA Laboratory, IAEA, No. 252, 1963.
A. Baeza, L. M. Del Río, E. García, A. Jiménez, C. Miró, J. Paniagua, M. Rufo, Proc. 10a Conf. Nac. de Física, Faro, Portugal, 1996.
L. A. Currie, Anal. Chem. 40 (1968) 586.
R. Moore, E. R. Buskirk, Nature, 189 (1961) 149.
A. Plata, Proc. Curso sobre Hidrología Isotópica, Cedex, Madrid, 1996.
S. Kaufman, K. F. Libby, Phys. Rev., 93 (1954) 1337.
K. Matsuura, Y. Sasa, C. Nakamura, H. Katagiri, J. Radioanal. Nucl. Chem., 197 (1995) 295.
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Baeza, A., García, E. & Miró, C. A procedure for the determination of very low activity levels of tritium in water samples. J Radioanal Nucl Chem 241, 93–100 (1999). https://doi.org/10.1007/BF02347294
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DOI: https://doi.org/10.1007/BF02347294